PC rebooting + troubleshooting findings so far

[Jiraffa]

​So I have this extremely weird situation.
My PC reboots when I turn on my AC or vacuum cleaner.
However the troubleshooting I've carried so far gives the weirdest results as well.

• 
  Trying my PC and vacuum cleaner at a friend's home in the same building doesn't cause my PC to reboot.
  Trying my PSU in another very old PC we own and the AC and the vacuum cleaner, the old PC doesn't reboot.
  Trying a different and very cheap PSU in my PC, my PC didn't reboot.
  Removing the GPU and RAM from my PC while keeping its PSU. It rebooted when the AC or vacuum cleaner were turned on.
  Optimal voltage where I live is supposed to be 220V. I receive 240V actually which doesn't drop below 230 when the AC or vacuum cleaner start up and draw high current, so theoretically I shouldn't be having issues with my electricity.
  The old PC doesn't reboot under the same conditions.
  Different outlets and rooms.. still reboots.
  Connecting the vacuum cleaner to the main line that feeds my home, rebooting stops.
  Connecting the PC before the AC's circuit breaker, still reboots.

​Sadly I can't do the following:

• 
  ​My friend doesn't have a PC I can try at my home.
  Use my old PC's PSU because it has lower wattage.
  Try different RAM or motherboards.

​I also had an issue where I would get random reboots but "only during peak hours". This issue was " severely minimized" after a friend of mine noticed that I was using incompatible RAM sticks, with different voltage and timing. He managed to set them both to the same voltage via the BIOS but their timing remains slightly different. They are currently in two different channels. I'm mentioning this incident because maybe the motherboard got affected over time?

​As you can see, my findings from the troubleshooting are pretty crazy and I've been mentally drained for the past few weeks trying to figure out the most logical explanation but I just can't. The only thing that I think I've established so far is that my PSU is fine. Could it be the motherboard? Why can't I replicate the issue else where other than my home? The voltage readings in my home are so good. The findings just don't add up together. Am I missing a factor in my testings? Any suggestions?

​My specs are as follows:
Intel Core i5 2500K @ 3.30GHz
8.00GB Single-Channel DDR3 @ 665MHz (9-9-9-24)
Gigabyte Technology Co. Ltd. PH67A-D3-B3 (Socket 1155)
2047MB NVIDIA GeForce GTX 750 Ti (ASUStek Computer Inc)
698GB Seagate ST750LX003-1AC154 (SATA)
PSU: Corsair VS 650

EDIT:
I was playing Overwatch one time and my PC rebooted mid match. When I launched the game again to reconnect, it rebooted again while loading the match, and another time also while loading the match By the third attempt I was already kicked but yea I noticed the pattern; where the reboots happened while loading the match so I started suspecting the GPU being part of all that. So I tried stress testing my GPU with the following test (the first one in the list in the photo below) and my PC rebooted every time the test tried to start. 100% my PSU?

If I'm to buy a new PSU what do you recommend? I'd love something at 50 bucks or below.

 

[panathas]

Your current PSU isn't considered to be a good unit. The VS series sits at the bottom of corsair's product line and has bad capacitors that may cause issues like what you are experiencing right now. You may also have electrical issues in your house but I'm 100% sure that if you get a new good PSU and not a cheap one, your issues will go away.

 

[Jiraffa]

Any other suggestions?

 

[Jiraffa]

Bump 🙁

 

[Jiraffa]

Bump. I also edited the post. Please take a look at the new information.

 

[panathas]

As I previously told you, the PSU is probably bad. I think it's clear now. In fact you said: "Trying a different and very cheap PSU in my PC, my PC didn't reboot". Trust me you don't want another very cheap PSU. Cheap smells trouble, if we are talking about PSUs. I don't know where you do live but I have some suggestions for you that won't break the bank.

1)https://www.newegg.com/Product/Product.aspx?Item=N82E16817139146 - Perfect match for your current system but doesn't leave you enough room for future upgrades. That said you can probably add a GTX 1060.

2)https://www.newegg.com/Product/Product.aspx?Item=N82E16817139147 - More expensive but you can later upgrade your GPU to a more power hungry model and you have a higher ceiling for other future upgrades.

Those PSU are considered to be value for money. Good luck.

 

[Jiraffa]

As I previously told you, the PSU is probably bad. I think it's clear now. In fact you said: "Trying a different and very cheap PSU in my PC, my PC didn't reboot". Trust me you don't want another very cheap PSU. Cheap smells trouble, if we are talking about PSUs. I don't know where you do live but I have some suggestions for you that won't break the bank.

1)https://www.newegg.com/Product/Product.aspx?Item=N82E16817139146 - Perfect match for your current system but doesn't leave you enough room for future upgrades. That said you can probably add a GTX 1060.

2)https://www.newegg.com/Product/Product.aspx?Item=N82E16817139147 - More expensive but you can later upgrade your GPU to a more power hungry model and you have a higher ceiling for other future upgrades.

Those PSU are considered to be value for money. Good luck.

Thanks a lot for your reply.
1- I'm kinda afraid of buying any Corsair products. I believe the CX series is right above the VS right?
2- Do you have any other brands in the same price range, in mind?
3- What about this one? https://www.newegg.com/Product/Product.aspx?Item=N82E16817151094
4- Are Japanese Capacitors a must? I heard good stuff about them. Should I expect anything in this price range to have Japanese Capacitors?

Thanks again panathas

 

[panathas]

1) Generally Corsair is considered to make good PSUs. Yes the CXxxxM is above the VS. The VS PSUs are indeed not very good and not intended for gaming PCs but for an office PCs they should be fine. Lately Corsair has updated its mainstream product line and the CXxxxM are new models which are very good. If you don't believe me, this site has reviewed the CX650M (which is based on the same platform as the CX550M and CX450M) => http://www.tomshardware.com/reviews/corsair-cx650m-psu,4770.html . In the VERDICT it says: "The CX650M is among the best bang for the buck PSUs available on the market today. It offers very good performance and it is silent enough, although it could be even more silent with a lower, minimum fan speed. At its current price it is very difficult to find a better unit, covered by a hefty five-year warranty."

2) Yes there are other brands and better PSUs out there but there are also more expensive. Some other good brands are EVGA, Seasonic. In fact Corsair, Seasonic and EVGA are considered the best PSU brands out there.

3)Yes that Seasonic PSU is also a good choice and is comparable to the Corsair CXxxxMs, but it's based on an older platform since it uses 2 12V rails. The CX550M and CX450M are using only one 12V rail which has some advantages over that Seasonic model.

4)Yes nowadays Japanese Capacitors are a must but they also increase the PSU's price. They also don't tell the whole story about a PSU. You should also take into account other staff like efficiency level, warranty, the PSU's fan, various protections features, etc. Those 2 Corsair PSUs that I mentioned, do have some Japanese Capacitors inside. That's why they have a 5 year warranty after all.

 

[Jiraffa]

Okay. I guess I'll try to get a CX model. I already contacted Corsair and they agreed that I could send them my VS650 however they won't let me get a higher tier one as a replacement even if I'm gonna pay the price difference.

 

[panathas]

Send the old PSU to Corsair and keep the one they send you back as a spare PSU. You never know when you'll need it. Good luck.

 

[Jiraffa]

I replaced my PSU with a Seasonic G 550 and everything's been fixed. Time will tell if it lives up to its name.